William wilkesonyof youngstown



' W.- WILKESON.

PULP GRINDER.

Patented Dec. 29 1885.

(No Model.)

Egfl Q M l y l WITNESSES: LNVENTOR;

. ATTORNEYS.

N PETERS. Phulo-Lilhugrnphen Washmxlum D c.

UN TED STATES .ATENT trio. 7

WILLIAM WILKESON, on'vounesrown, NEW YORK.

PULP-GRINDER.

SPECIFICATION forming part of Letters Patent No. 333,369, dated December29, 1885.

Application filed April 13, 1885. Serial No. 162,074. (No model.)

To all whom it may concern:

Be it known that 1, WILLIAM WILKESON, of Youngstown, in the county ofNiagara and State of New York, have invented a new and ImprovedPulp-Grinder, of which the following is a full, clear, and exactdescription.

The object of my invention is to provide a new and improved apparatusfor grinding wood pulp.

The invention consists in parts and details and combinations of thesame, as will be fully set forth hereinafter.

Reference is to be had to the accompanying drawings, forming part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure 1 is a longitudinal elevation of my improved pulp-grinder. Fig. 2is a plan view of the ball-track for the outer running-stone. Fig. 3 isan enlarged plan View of the balltrack for the lower end of the verticalshaft. Fig. 4. is a cross-sectional elevation of the same.

The conical running stone A is rigidly mounted on the vertical shaft B,and is surrounded by the outer running-stone, G, which is surrounded bya casing, D, the ends of which rest on chilled iron balls E, containedin circular pockets F on the upper and under sides of the cast plates G,forming part of the frame of the apparatus. Angle-bars H are secured tothe casing D for holding the outer stone, 0. The conical stone A has aseries of spiral grooves, J, and the inner stone has like grooves J inthe sides of its cavity, the shape of which is such as to fit theconical stone. On the top plate, G, the feed hopper K is arranged, andalso the arms or bridge-trees L in which the upper end of the shaft B isjournaled. An adj usting-screw, O, resting on the upper end of thespindle or shaft B, has a hand-wheel, O, and is passed through arms M onthe arms L. The lower end of the spindle B is provided with a ring, d,which rests on rollersN in an annular groove, 1?, in the top of a block,P, resting on the top of a screw, R, passed through a yoke, S, on thebottom of a frame, S, on the lower end of which screw a sprocketwheel,R, is mounted, over which a chain, T, passes,which also passes over asprocket-wheel, U, on the lower end of a vertical rod, U, passed throughthe plate G, and having a hand-wheel, U on its upper end. A sleeve, W,surrounds the lower end of the spindle B and the block P. -By turningthe rod U by means of its handle U the adjustingscrew R is turned and isscrewed either up or down, and thus the spindle B and the inner stone,A, on the same are adjusted vertically. By means of the said screw R andthe top screw, 0, the inner stone can be adjusted very nicely inrelation to the outer stone. That part of the rodU passing through theplate G is screw-threaded, and the aperture in the plate G is alsoscrew-threaded, so that when the said rod U is turned to screw the screwR upward the said rod will also be moved upward. The washer pulp box Vis below the lower plate, G. The belt-pulley W is mounted on the spindleor shaft B below the washer pulp boX V. -The plates G are connected by.bars I to form a suitable frame for the outer stone.

The operation and adjustment are as follows: The spiral grooves J in theconical stone A draw the material down, and the grooves on the stone 0force it down. The shaft or spindle B runs on the balls or rollers N,and the stone 0 and its casing D run on the balls E.

The balls E and N materially reduce the friction and cause the stone 0to run very easily. Having thus described my invention, what I claim asnew, and desire to secure by Letters Patent, is-

1. In a pulp-grinder, the combination,with the outer stone having curvedgrooves in its base, and the inner conical stone, also having curvedgrooves, of annular pockets containing balls against which the edges ofthe easing of the outer stone rest, substantially as and for the purposeset forth.

' 2. In a pulp-grinder, the combination,with the inner and outerrevolving stones, of annular pockets containing balls against which theedges of the casing of the outer stone rest,

substantially as herein shown and described.

3. In a pulp-grinder, the combination,with the inner and .outerrevolving stones, A and G, of the casing D, surrounding the outer stone,the plates G, the slotted annular pockets F, and the balls E in thesame, substantially as herein shown and described.

4. In a pulp-grinder, the combination,with

the inner and outer stones, A O, of the plates G and the bars I.substantially as herein shown and described.

5. In a pulp-grinder, the combination,with 5 the inner and outer stones,A O, of the plates G, the bridge-trees L, the arms M, and the screw 0,substantially as herein shown and described.

6. The combination, with the stones A and 10 O, of the spindle B, andthe ball-box P, on which the spindle rests, substantially as hereinshown and described.

7. The combination, with the stones A and O, of the casing D,surrounding the stone 0, 1 5 and of the angle-bars H, substantially asherein shown and described.

8. In a pulp-grinder, the combination,with

the stones A G, of the shaft or spindle B, the screw R, held in a yoke,S, the rod U, and a chain and sprocket-wheels for revolving the screw Rfrom the rod U, substantially as herein shown and described.

9. In a pulp-grinder, the combination,with the stones A O, of thespindle B, the screw R, held in the yoke S, the sprocket-wheel R on thelower end of the screw R, the chain T, the sprocket-wheel U, and of therod U, having a screw-threaded part, passed through a screwthreadedaperture in the frame of the machine, substantially as herein shown anddescribed.

, WILLIAM WILKESON. \Vitnesses:

C. R. AYER, JOSEPH BADGLEY.

